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| author | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2015-08-20 17:28:44 +0200 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2015-10-14 14:32:06 +0200 |
| commit | 1ec2772e0c3ca3159035c03165355e355efc326b (patch) | |
| tree | 469be3ba9032d367e4a796d6a31b25ccaab0d06a /drivers/s390/virtio | |
| parent | s390/bitops: implement cache friendly test_and_set_bit_lock (diff) | |
| download | linux-1ec2772e0c3ca3159035c03165355e355efc326b.tar.xz linux-1ec2772e0c3ca3159035c03165355e355efc326b.zip | |
s390/diag: add a statistic for diagnose calls
Introduce /sys/debug/kernel/diag_stat with a statistic how many diagnose
calls have been done by each CPU in the system.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'drivers/s390/virtio')
| -rw-r--r-- | drivers/s390/virtio/virtio_ccw.c | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/drivers/s390/virtio/virtio_ccw.c b/drivers/s390/virtio/virtio_ccw.c index e9fae30fafda..b2a1a81e6fc8 100644 --- a/drivers/s390/virtio/virtio_ccw.c +++ b/drivers/s390/virtio/virtio_ccw.c @@ -28,6 +28,7 @@ #include <linux/io.h> #include <linux/kvm_para.h> #include <linux/notifier.h> +#include <asm/diag.h> #include <asm/setup.h> #include <asm/irq.h> #include <asm/cio.h> @@ -366,9 +367,9 @@ static void virtio_ccw_drop_indicator(struct virtio_ccw_device *vcdev, kfree(thinint_area); } -static inline long do_kvm_notify(struct subchannel_id schid, - unsigned long queue_index, - long cookie) +static inline long __do_kvm_notify(struct subchannel_id schid, + unsigned long queue_index, + long cookie) { register unsigned long __nr asm("1") = KVM_S390_VIRTIO_CCW_NOTIFY; register struct subchannel_id __schid asm("2") = schid; @@ -383,6 +384,14 @@ static inline long do_kvm_notify(struct subchannel_id schid, return __rc; } +static inline long do_kvm_notify(struct subchannel_id schid, + unsigned long queue_index, + long cookie) +{ + diag_stat_inc(DIAG_STAT_X500); + return __do_kvm_notify(schid, queue_index, cookie); +} + static bool virtio_ccw_kvm_notify(struct virtqueue *vq) { struct virtio_ccw_vq_info *info = vq->priv; |